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| Number | Title | Issue Date |
| 7813271 | Aggregated link traffic protection A network component comprising a processor configured to implement a method comprising communicating a data stream to a destination over a plurality of links, the data stream comprising a high priority data and a plurality of low priority data, wherein the high prio... | 10/12/2010 |
| 7801030 | Technique for using OER with an ECT solution for multi-homed spoke-to-spoke sites A technique dynamically creates and utilizes a plurality of multi-homed Virtual Private Network (VPN) tunnels from a client node of one spoke network to a client node of another spoke network in a computer network. According to the technique, a VPN client node, e.g.... | 09/21/2010 |
| 7801031 | Rerouting for double-link failure recovery in an internet protocol network A router in a survivable portion of a network may forward packets to a destination node even in the event of a double-link failure. For a given destination node, the router has previously been configured with a primary port, a primary backup port, and a secondary ba... | 09/21/2010 |
| 7792020 | Admission control utilizing backup links in an ethernet-based access network An admission control process in an Ethernet-based access network having both active links and idle backup links. When a service request is received in an access node, the process searches for a path of links to an access edge node with sufficient bandwidth to serve ... | 09/07/2010 |
| 7792019 | Call management A system may include a destination device that receives information about a caller via a first outgoing leg and exchanges content with the caller via the first outgoing leg. The system may further include a network device that receives an incoming call from the call... | 09/07/2010 |
| 7760624 | Network access device and method for protecting subscriber line communications A network access device comprises a first line card, a second line card, and logic. The first line card has a first transceiver coupled to a first subscriber line, and the second line card has a second transceiver coupled to a second subscriber line. The logic is co... | 07/20/2010 |
| 7756018 | System and method for implementing fast layer 2 protection in passive optical networks System and method for providing fast protection in a passive optical network (“PON”) including two central hubs and a plurality of network nodes, wherein the network nodes are connected to a first of the central hubs by a first optical path and to a second of th... | 07/13/2010 |
| 7756019 | Method and devices for implementing group protection in MPLS network A method for implementing group protection in a Multiple Protocol Label Switching (MPLS) network disclosed in the present invention includes: monitoring a Label Switched Path (LSP) in an MPLS network; and performing a group protection switching when a failure is det... | 07/13/2010 |
| 7751313 | Data transmission method and apparatus In a data transmission method and apparatus which can perform a switchover of all of the main lines without requiring much construction cost, a transmission apparatus sets, upon frame transmission or reception, combinations of a plurality of main lines with virtual ... | 07/06/2010 |
| 7746769 | Management of redundant and multi-segment pseudo-wire A system and method of managing redundant and multi-segment pseudo-wire, including calculating two aggregated endpoints with two or more local endpoints, at least one local endpoint being a backup endpoint, mapping the aggregated endpoints and a plurality of nodes i... | 06/29/2010 |
| 7742403 | Deadlock detection in a telecommunication network A method is described for checking deadlock in a telecommunication network including a first activated backup connection for protecting traffic over a first intended connection. The method includes the steps of checking a reversion blocked status of the first intend... | 06/22/2010 |
| 7738364 | Scalable, highly available cluster membership architecture The invention comprises a software-based communications architecture and associated software methods for establishing and maintaining a common membership among a cluster of multiple, cooperating computers (called hosts). The invention incorporates the use of nearest... | 06/15/2010 |
| 7738365 | Determining rerouting information for double-link failure recovery in an internet protocol network Backup ports for a first router of the survivable network are determined so that the first router can reach a destination node in the event of a double link failure. A routing path graph having the destination node is accepted. The routing path graph includes one or... | 06/15/2010 |
| 7724655 | Network addressing scheme for reducing protocol overhead in an optical network A method for operating a network and a network architecture implementing the method are described. The method, in one embodiment, begins by grouping a plurality of nodes into zones, where the network includes the plurality of nodes. At least one of the nodes in each... | 05/25/2010 |
| 7706259 | Method for implementing redundant structure of ATCA (advanced telecom computing architecture) system via base interface and the ATCA system for use in the same A method for implementing a redundant structure of an ATCA system via a base interface of a network system based on an ATCA standard, and the ATCA system for use in the same are disclosed. Each of routing protocol shelves and LI shelves includes two ports connected ... | 04/27/2010 |
| 7701848 | Efficient trap avoidance and shared protection method in survivable networks with shared risk link groups and a survivable network An efficient trap avoidance and shared protection method in a survivable network with shared risk link groups. The invention includes a fast and efficient heuristic algorithm for avoiding traps, an algorithm, which may also be applied effectively to shared SRLG prot... | 04/20/2010 |
| 7688720 | Method for selecting a restoration path in a mesh network A method of selecting a restoration path in a mesh telecommunication network is disclosed that advantageously is practical and flexible and may be pre-computed along with a service connection path during the setup of the connection. The information used to select th... | 03/30/2010 |
| 7680034 | Redundant control systems and methods A redundant control system for controlling an electromechanical system is provided. The control system includes a first processor, a second processor, an input-output node, a first communication channel, a second communication channel, and a signal selector. The fir... | 03/16/2010 |
| 7672231 | System for multiplying communications capacity on a time domain multiple access network using slave channeling A communications system comprising: at least two communications resource sets, wherein each resource set includes at least one communications resource; a communications terminal connected to each of the at least two communications resource sets for transmitting and ... | 03/02/2010 |
| 7656792 | Method and apparatus for computing alternate multicast/broadcast paths in a routed network Alternate multicast/broadcast paths may be calculated in a routed network to enable broadcast/multicast traffic to be transmitted around a local failure in the routed network until the routing system reconverges on a new network topography. According to an embodimen... | 02/02/2010 |
| 7652987 | Method and system for guaranteeing reliability of end-to-end quality of service The present invention discloses a method for guaranteeing reliability of end-to-end QoS, including: a. detecting and determining whether there is a failure on a Label Switched Path (LSP); if there isn't, returning to the process of detecting; otherwise, determining ... | 01/26/2010 |
| 7639607 | Signaling system for simultaneously and autonomously setting a spare path A signaling system able to improve the efficiency of utilization of network resources and autonomously set a correct spare route, that is, a signaling system setting a path passing through two rings interconnected by a plurality of nodes by signaling wherein each no... | 12/29/2009 |
| 7639606 | Method and system for automatically rerouting logical circuit data in a virtual private network A method and system are provided for automatically rerouting logical circuit data in a virtual private network (“VPN”). A dedicated logical circuit in the VPN is monitored for status information pertinent to the dedicated logical circuit. The dedicated logical c... | 12/29/2009 |
| 7630302 | Method and system for providing a failover circuit for rerouting logical circuit data in a data network A method and system are provided for providing a failover circuit for rerouting logical circuit data in a data network. An alternate communication path is identified for routing data for a logical circuit in the data network. An inactive logical circuit is then sele... | 12/08/2009 |
| 7626925 | Methods for finding a merge point node for MPLS fast re-route Methods and apparatus for unambiguously identifying merge points associated with backup label switched paths (LSPs) which substantially bypass border routers included along a primary LSP are disclosed. According to one aspect of the present invention, a method for f... | 12/01/2009 |
| 7609622 | Communication system having enhanced reliability A method for a system including a plurality of encoders each for receiving a first signal and encoding to generate a respective second signal for sending to a respective subscriber, comprising receiving, in each encoder, the first signal from a first source, while t... | 10/27/2009 |
| 7609624 | Method and apparatus for pre-provisioning networks to support fast restoration with minimum overbuild Improved network design techniques are provided. For example, a technique for designing a protection capacity to be reserved in a network comprises the following steps/operations. One or more link capacities associated with a network topology are obtained. The netwo... | 10/27/2009 |
| 7609623 | Method and system for automatically rerouting data from an overbalanced logical circuit in a data network A method and system are provided for automatically rerouting data from an overbalanced logical circuit in a data network. Status information is received for a logical circuit communicating data in the data network. The status information may include a forward explic... | 10/27/2009 |
| 7606145 | Dual-mode broadband modem A dual-mode broadband modem operative to operate in a service mode and a surveillance mode is disclosed. Generally, the dual-mode broadband modem comprises a primary communication device; a secondary communication device; a central processing unit in communication w... | 10/20/2009 |
| 7590055 | High availability broadband connections through switching from wireline to diverse wireless network A broadband access connection carried over a wireline link is backed-up by a wireless connection to create a high availability communication channel. This protection system comprises a wireline link processor for connecting a user site to a provider network over a b... | 09/15/2009 |
| 7567507 | Shared bandwidth reservation in PL, ATM, FR and IP/MPLS networks A method and a system for allocating restoration capacity in a network link in a communications network provides that a common pool of communication capacity is provisioned in a network link, such that the common pool of communication capacity includes spare capacit... | 07/28/2009 |
| 7564780 | Time constrained failure recovery in communication networks A network includes multiple nodes interconnected to form a mesh topology. These nodes support working paths for the transmission of data and protection paths to provide for recovery in the event of failures on working paths. To select protection paths, elements of t... | 07/21/2009 |
| 7535831 | Method and apparatus for providing grades of service for unprotected traffic in an optical network A method for providing grades of service to unprotected traffic on an optical network that provides protection channels associated with working channels, defines a linearly ordered set of protection switch request priorities, and two or more grade of service priorit... | 05/19/2009 |
| 7525907 | Method, device and software for establishing protection paths on demand and revertive protection switching in a communications network In a method of providing protection switching in a meshed communications network, a protection path between two nodes on the network is only established, on demand, as it is required, after a fault along a working path between the two nodes has been detected. After ... | 04/28/2009 |
| 7508755 | Methods and devices for creating an alternate path for a bi-directional LSP Upon the detection of a failure along a bi-directional label switched path, traffic in both forward and backward directions is re-routed to the same alternate path. ... | 03/24/2009 |
| 7505404 | Maintaining communication sessions Communication occurs between a server and a terminal. The terminal establishes a first communication path with the server via a first allocated address. The server allocates an identification reference to a communication session upon initiation of said communication... | 03/17/2009 |
| 7502315 | Method for hybrid network planning A method of determining a path through a network. Structures in a network are grouped into structure groups, each structure group comprising at least two nodes. Virtual circuit information for every pair of nodes in the structure groups is determined, and connection... | 03/10/2009 |
| 7486616 | Preemptive dynamic frequency selection Briefly, in accordance with one embodiment of the invention, an access point may preemptively broadcast an alternate channel to switch to, along with an indication of the beacon timing for the alternate channel, prior to any catastrophic interference. The access poi... | 02/03/2009 |
| 7463581 | Re-routing connections using redundant path connections and loopbacks A method and apparatus are described for re-routing user connections between first and second nodes in a network switch. A loop-back path provides connectivity between the first and second nodes. The first node has a primary connection and a secondary connection. Th... | 12/09/2008 |
| 7443789 | Protection switching mechanism A system and method for protection switching in a transmission network is described. A protection switching mechanism comprises a multiplexer, a transmission path for each output of the multiplexer and a remote circuit. The multiplexer has an input coupled to receiv... | 10/28/2008 |
